RDF+OWL are fit for the job!

<?xml version="1.0" encoding="ISO-8859-7"?>
<rdf:RDF xml:lang="en" 
   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
   xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" 
   xmlns:crm="cd://#" xml:base="//">
	<crm:E84.Information_Carrier rdf:about="Epitaphios GE34604">
		<crm:P2F.has_type>
			<crm:E55.Type rdf:about="ecclesiastical embroidery">
			</crm:E55.Type>
		</crm:P2F.has_type>
		<crm:P2F.has_type>
			<crm:E55.Type rdf:about="liturgical cloth">
			</crm:E55.Type>
		</crm:P2F.has_type>
		<crm:P52F.has_current_owner>
			<crm:E40.Legal_Body rdf:about="Museum Benaki">
			</crm:E40.Legal_Body>
		</crm:P52F.has_current_owner>
		<crm:P55F.has_current_location>
			<crm:E53.Place rdf:about="drawer 8 / case 27 / room 6 / floor sub 1 / new wing">
				<crm:P2F.has_type>
					<crm:E55.Type rdf:about="drawer">
					</crm:E55.Type>
... 

• just a serialization format for metadata: ensures interoperability across SW tools
• OWL meets and exceeds current CRM needs: a number of reasoners available